most citedA Model Selection Criterion for Multidimensional Gaussian Processes: Application to Radial Velocities

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6 papers

astro-ph.IM20261 cited

A Model Selection Criterion for Multidimensional Gaussian Processes: Application to Radial Velocities

Oscar Barragán

Multidimensional Gaussian Process (multi-GP) regression is widely used to disentangle stellar and planetary signals in radial velocities (RVs) by jointly modelling ancillary activi…

astro-ph.EP2026

Atmospheric characterization of HIP 67522 b with VLT/CRIRES+. VLT/CRIRES+ suggests a heavier planet and hints at deuterium fractionation

A. Lavail, F. Debras, B. Klein +9

Young transiting exoplanets provide unique opportunities to probe planetary atmospheres during the critical early phases of evolution. HIP 67522 b, a 17 Myr old hot Jupiter with an…

astro-ph.EP2024

Mass determination of two Jupiter-sized planets orbiting slightly evolved stars: TOI-2420 b and TOI-2485 b

Ilaria Carleo, Oscar Barrágan, Carina M. Persson +67

Hot and warm Jupiters might have undergone the same formation and evolution path, but the two populations exhibit different distributions of orbital parameters, challenging our und…

astro-ph.EP2024

TOI-837b is a Young Saturn-sized Exoplanet with a Massive 70 Core

Oscar Barragán, Haochuan Yu, Alix Violet Freckelton +10

We present an exhaustive photometric and spectroscopic analysis of TOI-837, a F9/G0 35 Myr young star, hosting a transiting exoplanet, TOI-837b, with an orbital period of 8.32d. Ut…

astro-ph.EP2024

Planet Hunters TESS V: a planetary system around a binary star, including a mini-Neptune in the habitable zone

Nora L. Eisner, Samuel K. Grunblatt, Oscar Barragán +61

We report on the discovery and validation of a transiting long-period mini-Neptune orbiting a bright (V = 9.0 mag) G dwarf (TOI 4633; R = 1.05 RSun, M = 1.10 MSun). The planet was…

astro-ph.IM2024

REPUBLIC: A variability-preserving systematic-correction algorithm for PLATO's multi-camera light curves

Oscar Barragán, Suzanne Aigrain, James McCormac

Space-based photometry missions produce exquisite light curves that contain a wealth of stellar variability on a wide range of timescales. Light curves also typically contain signi…